76 THE NAUTILUS. 



bands in place of the one band, near the suture, which occurs in 

 celidonota. In clarhei only one of the bands is visible on the upper 

 whorls. I take pleasure in naming this species after Mr. Eagle 

 Clarke. Type in the writer's collection. 



Terehra lamarckii Kien. I agree with Mr. Smith upon the 

 validity of this species. The examples before me are well defined 

 and show little variation. Tryon and Reeve considered it a variety 

 of T. duplicata L. In the latter the longitudinal striae are farther 

 apart. The style of coloration is also strikingly peculiar. 



Pleurotoma tigrina Lk. 



Murex pahna-rosa Lk. Not previously reported from Aden. 



Murex ramosus L. 



Murex rota Sowb. Fresh beach specimens were obtained of this 

 beautiful species. 



Murex tenuispina Lk. This and M. palni-rosce may have been 

 obtained at some distance from Aden. 



Columbella picta Reeve. PI. IV. fig. 13. Up to the present the 

 locality of this species has been unknown. The specimen beiore me 

 agrees perfectly with the type in the British Museum. 



Columbella misera Sowb. var. californica Reeve. Plate IV, fig. 

 15. Dr. Pilsbry, to whom I submitted the single example, writes 

 '' this occurs in Japan — not in California, which was an error of 

 Reeve's." 



Columbella propinqua E. A. Smith. Plate IV, fig. 14. The type 

 is in the British Museum. 



Columbella terpsichore Leathes. Plate IV, fig. 12. Aden, as the 

 first locality known for this species, was reported by Shopland. 

 The type is in the British Museum. 



Eburna valentiana Swainson, I am inclined to believe that this 

 is only a stout form of E. spirata as pointed out by Von Martens. 



Nassa albescens Dunker. 



Nassa arcularia L. 



Nassa bimaculosa A. Ad. From other examples in my collection 

 I conjecture that bimaculosa is a valid species. 



Nassa canaliculata Lam. 



Nassa coronata Lam. 



Nassa fissilabris A. Ad. 



Nassa gemmulata Lam. 



Nassa nodi/era Powis. 



